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Short timescale variation in the submillimeter flux of Sagittarius A*
Makoto Miyoshi, Yoshiaki Kato, Yoshiharu Asaki +8
We study short-timescale 340 GHz flux-density variability of Sgr A* using ALMA Cycle 3 observations. Careful self-calibration enabled 10 s snapshot imaging with very high effective…
Nuclear Stellar Disk-like Nature in the Kinematics of SiO Maser Stars around Sagittarius A*
Masato Tsuboi, Takahiro Tsutsumi, Ryosuke Miyawaki +1
We present a detailed analysis of the kinematics of SiO maser stars around the center of the Milky Way, Sagittarius A* (Sgr A*). We used the archive data in the SiO v=1, J=2-1 emis…
ALMA Astrometry of the Objects within 0.5 pc of Sagittarius A
Masato Tsuboi, Takahiro Tsutsumi, Atsushi Miyazaki +2
Atacama Large Millimeter/Submillimeter Array (ALMA) is promising to be a powerful tool for precision astrometry of the area around Sagittarius A (Sgr A) because it ha…
Cloud-Cloud Collision in the Galactic Center Arc
Masato Tsuboi, Yoshimi Kitamura, Kenta Uehara +4
We performed a search of cloud-cloud collision (CCC) sites in the Sagittarius A molecular cloud (SgrAMC) based on the survey observations using the Nobeyama 45-m telescope in the C…
Where is the Western Part of the Galactic Center Lobe Located really?
Masato Tsuboi, Takahiro Tsutsumi, Yoshimi Kitamura +3
The Galactic Center Lobe (GCL) is a peculiar object widely protruding from the Galactic plane toward the positive Galactic latitude, which had been found toward the Galactic Center…
How far actually is the Galactic Center IRS 13E3 from Sagittarius A?
Masato Tsuboi, Yoshimi Kitamura, Takahiro Tsutsumi +3
The Galactic Center IRS 13E cluster is a very intriguing IR object located at pc from Sagittarius A (Sgr A) in projection distance. There are both argument…